CVE-2026-53784: CWE-59 Improper Link Resolution Before File Access ('Link Following') in RsyncProject rsync
rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.
CVE-2026-53784: CWE-59 Improper Link Resolution Before File Access ('Link Following') in RsyncProject rsync
Description
rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.
CVSS v4.0
Score 8.4high
Affected software
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Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-06-10T20:14:32.826Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7ddec3bf8831d5395cfc33
Added to database: 08/13/2026, 15:12:03 UTC
Last updated: 08/13/2026, 15:12:03 UTC
Views: 1
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